Direct answer
A septic system treats household wastewater on-site (vs. piped to a municipal sewer plant). Solids settle in the tank, liquid effluent flows to a drain field where soil microbes complete treatment. Most rural and exurban Cincinnati homes use them.
Authoritative sources
EPA-recommended pumping schedules and inspection cadence for residential septic systems.
County health department oversight of septic permits and inspections in Hamilton County, OH.
Permit authority for septic installation and replacement in Warren County, OH.
Related questions
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